Seal-lock



W. BRUMBLE.

l(Model.)

SEAL LOCK.

Patented Aug. 16, 1887.

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Lnmgnpher. wnhinmun, D. C.

UNITED STATES PATENT OFFICEo VILLAM BRUMBLE, OF BALTIMORE, MARYLAND.

SEAL-LOCK.

SPECIFICATION forming part of Letters Patent No. 368,375, dated August 16, 1887.

Application tiled June 7, 1887. Serial No. 240,512. (Model.)

To aZZ whom, it may concern.-

Be it known that l, WILLIAM BRUMBLE, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Seal- Locks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon,which form apart of this specification.

My invention relates to seallocks; and its object is to provide a simple, cheap, and effective lock, which can be readily and quickly applied by unskilled persons, and yet cannot be opened except by breaking the seal, so that any unauthorized attempt to open it may be instantly detected upon inspection.

A further object is to provide a lock so constructed that the seal is the only part that is destroyed when the lock is opened, the other parts remaining intact and ready for repeated use.

My improved seal-lock is applicable to any of the purposes for which such locks are used, though it is especially adapted for frei ghtcars, mail-bags, and the like.

It consists in the device hereinafter described, the novel features being specifically pointed out in the claims.

The same letters of reference indicate corresponding parts in all the views of the accompanying drawings, in which- Figure l represents a side elevation of a portion of a door and door-postprovided with my improved lock. Fig. 2 is a plan view of the same, the door and door-post being shown in section. Fig. 3 is an end View, the lock-case being shown in longitudinal section. Figs. 4, 5, and 6 are views of the lock adapted for use on amail-bag; and Figs. 7, 8, 9, and 10 are detail views.

A represents the door, and B the door-post, the former being provided with a staple or hook, C, on which is hung the hasp D, which is preferably made, as shown, having two Hat portions arranged substantially at right angles with each other, one having an eye to receive the staple G and the other having one or more againstthe pin I.

holes, d, to lit over the lock-case E. A base plate, F, bolted or otherwise secured to the door-post B, supports the lock-case E, which has a cylindrical hole extending through it to receive the locking-pin. vAt one side of the lock-case is formed a chamber, G, communieating with the hole for the lockingpin. The upper end of the case forms a cylindrical neck, as shown, and diametrically across it is cut a narrow slit, H, extending from the upper edge of thepneck down to a point just above the chamber G.

The cylindrical locking-pin I is provided with a head, having a depending ilange, fi, which tits over and around the upper end of the neck of thelock-case E, when the pin is inserted therein. Through the upper part of the pin l, and just below the head, is a dia- 'metrical slot, which registers with the slot l-I in t-he lock-case when the pin is pushed down into the case. The depending flange of the pin is notched on each side opposite to this slot, and on one side of ythe head the notch is carried up through the head, as shown at fi', Fig. 2, for a purpose hereinafter explained. The pin is provided with the usual safetychain, l.

One side of the lower portion of the pin is cut away, as shown, forming a. shoulder, i2. ln the chamber G is seated a dog or detentpawl, K, pivoted at k, and provided with a spring, k', which presses the end of the dog These parts are so arranged that, it' the pin is pushed into the case until its head strikes the upper end of the case and the slots in the pin and case are in line, the end ofthe dog K engages the shoulder of the pin and prevents its withdrawal from the case.

The spring k is preferably made of a single piece of spring-wire bent into a loop the ends of which are passed through a holein the dog near the pivot, and bent down on cach side and along the back of the dog. The loop lies against'the wall ofthe chamber G, as shown. This spring is simple and cheap, and the abovedescribed mode of attaching it to the dog dispenses with solder or other fastenings.

The lower end of the lock-casc is contracted at e below the chamberG to prevent the insertion of a wire or other implement for the purpose of prying back the dog and so picking IOO the lock. The end of the case is left open, however, to allow cinders and dirt to escape, vhlich` would otherwise be likely to clog the The pin I can be released by giving it a quarter-turn to carry the shoulder 'i2 away from under the end of the dog K, as shownvin Fig. 9, which is a section of the case, pin, and dog taken just above the shoulder il. The pin can then be drawn out of the lock-case.

My improved seallock is used as follows: One of the holes d in the hasp is passed down over the neck of thelock-case. A fiat seal,

L, 4substantially of the shape shown in Fig. 8,

and made ofrtin' or some other suitable frangible material, and having the usual marks -impressed or inscribed upon it., is inserted through the slot in the pin, which isthen pushed down into the lock-case, the projecting ends of the seal being received in the 'slots H in the neck of the case. The narrow middle portion, l, of the seal is of such awidth as to ll the slot above the hasp D, its upper edge lying in the notches cut in the depending iiange t' of the head of the pin. The shorter end, Z', of the seal passes up through the notch i' in the head, as shown. The seal prevents the pin i from being rotated to disengage the dog K from the shoulder i, and from' the manner in which the seal is held in the notches in the head of the pin it cannot be bent or twisted, so as to permit the pin to be turned. The width of the slots4 in the pin and the lock-case whichreceive the seal is only a little greaterV than the thickness of the material from which it is cut, thus preventing'it from being removed by doubling down one end and'driving it out. The pin can only be releasedV by breakin g/oii' one end of the seal 'and withdrawing the remaining portion from the slots in which it isheld. The two holes d d in the hasp D enablethe door to be shut tight or left partly open, as shown in Figs. 1 and 2, for the purpose of vcntillatiou, and to be locked in either position. Y r

. Whenmy improved lock is to be used on mailbag-s or the like, the lock case and pin are slightly modified, as shown in Figs. 4, 5, yand 6. The base-plate F is dispensed with. 'Ihe bottom of the case may be closed, if desired, as indicated inFig. 6. l An opening, E', is formed in one side of the case, and the pin I is provided with a stop, Vvwhich abuts against the walls of theop'ening E', and thereby limits the movement of the pin I and prevents it from being wholly withdrawn from the case. The upper end of the-pin I is cut away at one side, forming two stepped shoulders M M'. The head of the pin Ais composed of a curved arm, N, to which is hinged a curved piece, N',

- provided with a projection, n, and a tail, n'.

These parts are so proportioned and arranged that when the'hinged piece N' is turned down the projection n iits against` the shoulder M, Y

and the tail n' lies near to but not touching the shoulder M', forming a slot between them for Y the reception of a seal, L', Fig. 9, similar in shape and material to the seal L, Fig. 8, above described. i l

The arm N and the hinged Apiece N' together form a ring or loop, as shown, in which is received a staple or-other fastening device to be secured. The 4piece N', having been passed through said staple, is then turned down ,against the pin I, the seal L' having been previously placed ,against the shoulder M'.

The tail-piece n', closes upon the seal, and the pin is then-pushed down into the case E, where it is locked, as heretofore described, .and as shown 'in Fig. 5. v l

Having thus described my` invention, what I claim, and desire to-secure by Letters Patent, 1si ,Y 1. In a seal-lock, the combination, with a.

lock-case having acylindrical opening through it, slots I-I, cut in its upper end, and a channber at one side, Vof a spring-actuated dog pivoted in the chamber, and a cylindrical locking-pinhaving on one side a shoulder, i, and

arslot in its upper end, substantially as de der i and vthe flange i, provided witht-he notch i', and a dog, K, pivoted in the chamber G, substantially as described. Y

3. The-combination,with the hasp D,of the ICO` lock-case E, having an upwardly-'projecting neck containing the slots H, the chamber G, the dog K, pivoted therein, the cylindrical pin I, having the shouldeni", the llange i, and the notch z", and the seal L, with its nar-` row middle portion, Z, resting in the slots ofV the pin and thelock-case, and its wide ends projecting up on each side'of the head of the pin, the end Z of the seal entering the notch z", substantially as described.

4. In a seal-lock, a dog or detent-pawlprovided with a spring consistingof a loop of wire having its ends passed through a hole near the pivot of the pawl and'bent down along the back of the pawl i, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses. e

WILLIAM BRUMBLE. Witnesses: e

ROBINSON' WHITE, FRANK G. MAT'rrNGLY. 

